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Michał Horodecki
Michał Horodecki (born 1973) is a Polish physicist at the University of Gdańsk working in the field of quantum information theory, notable for his work on entanglement theory. He co-discovered the Peres-Horodecki criterion for testing whether a state is entangled, and used it to find bound entanglement together with his brother Paweł Horodecki and father Ryszard Horodecki. He co-discovered with Jonathan Oppenheim, Paweł Horodecki and Karol Horodecki that secret key can be drawn from some bound entangled states. Together with Fernando Brandao he proved that every one-dimensional quantum state with a finite correlation length obeys an area law for entanglement entropy. Together with Jonathan Oppenheim and Andreas Winter, he discovered quantum state-merging In quantum information theory, quantum state merging is the transfer of a quantum state when the receiver already has part of the state. The process optimally transfers partial information using entanglement and classical c ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
University Of Gdańsk
The University of Gdańsk ( pl, Uniwersytet Gdański) is a public research university located in Gdańsk, Poland. It is one of the top 10 universities in Poland and is also an important centre for the studies of the Kashubian language. History The University of Gdańsk was established in 1970 by a merger of the Higher School of Economics in Sopot (in existence since 1945) and Gdańsk College of Education (formed in 1946). Nowadays, the University of Gdańsk is the largest institution of higher learning in Poland's northern region of Pomerania. The University of Gdańsk boasts significant scientific achievement which enforces its leading position, particularly through activity and research connected with the sea. In this regard, the university has been involved in cooperation with scientific research centres from nearly all corners of the globe. The University of Gdańsk is involved in the creation of a network of European universities selected in the ‘European Universities’ ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Quantum Information
Quantum information is the information of the state of a quantum system. It is the basic entity of study in quantum information theory, and can be manipulated using quantum information processing techniques. Quantum information refers to both the technical definition in terms of Von Neumann entropy and the general computational term. It is an interdisciplinary field that involves quantum mechanics, computer science, information theory, philosophy and cryptography among other fields. Its study is also relevant to disciplines such as cognitive science, psychology and neuroscience. Its main focus is in extracting information from matter at the microscopic scale. Observation in science is one of the most important ways of acquiring information and measurement is required in order to quantify the observation, making this crucial to the scientific method. In quantum mechanics, due to the uncertainty principle, non-commuting observables cannot be precisely measured simultaneously, as ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Bound Entanglement
Bound entanglement is a weak form of quantum entanglement, from which no singlets can be distilled with local operations and classical communication (LOCC). Bound entanglement was discovered by M. Horodecki, P. Horodecki, and R. Horodecki. Bipartite entangled states that have a non-negative partial transpose are all bound-entangled. Moreover, a particular quantum state for 2x4 systems has been presented. Such states are not detected by the Peres-Horodecki criterion as entangled, thus other entanglement criteria are needed for their detection. There are a number of examples for such states. There are also multipartite entangled states that have a negative partial transpose with respect to some bipartitions, while they have a positive partial transpose to the other partitions, nevertheless, they are undistillable. The possible existence of bipartite bound entangled states with a negative partial transpose is still under intensive study. Properties of bound entangled states with ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Paweł Horodecki
Paweł Horodecki (born in 1971) is a Polish professor of physics at the Gdańsk University of Technology working in the field of quantum information theory. He is best known for introducing (together with his father Ryszard Horodecki and brother Michał Horodecki) the Peres-Horodecki criterion for testing whether a quantum state is entangled. Moreover, Paweł Horodecki demonstrated that there exist states which are entangled whereas no pure entangled states can be obtained from them by means of local operations and classical communication (LOCC). Such states are called bound entangled states. He also showed that even bound entanglement (when used in conjunction with a single pair of free entangled particles) can lead to quantum teleportation with a fidelity impossible to achieve with only separable states. Paweł Horodecki was educated in Poland, receiving an M.Sc from the University of Gdańsk (1995) and a Ph.D (with honours) from the Gdańsk University of Technology (1999) and ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Ryszard Horodecki
Ryszard Horodecki (born 30 September 1943) is a Polish physicist and a professor of University of Gdańsk. He contributed largely to the field of quantum informatics. In his most widely cited paper, 'Separability of Mixed States: Necessary and Sufficient Conditions' written together with his sons, Michał and Paweł, he proposed the idea currently known as the Peres-Horodecki criterion. With over 12,000 citations, he is considered to be one of the leading Polish physicists . Career He graduated from Department of Electronics, University of Gdańsk. Horodecki received his Ph.D. from Gdańsk University of Technology in 1976. Twenty-one years later, in 1997 he obtained his habilitation from Nicolaus Copernicus University in Toruń. His contribution to the quantum informatics were acknowledged in 2008, when he received the Prize of the Foundation for Polish Science in the field of mathematics and physics. In 2010 he became a member of Polish Academy of Sciences, whereas in 2011 rec ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Fernando Brandao
Fernando is a Spanish and Portuguese given name and a surname common in Spain, Portugal, Italy, France, Switzerland, former Spanish or Portuguese colonies in Latin America, Africa, the Philippines, India, and Sri Lanka. It is equivalent to the Germanic given name Ferdinand, with an original meaning of "adventurous, bold journey". First name * Fernando el Católico, king of Aragon A * Fernando Acevedo, Peruvian track and field athlete * Fernando Aceves Humana, Mexican painter * Fernando Alegría, Chilean poet and writer * Fernando Alonso, Spanish Formula One driver * Fernando Amorebieta, Venezuelan footballer * Fernando Amorsolo, Filipino painter * Fernando Antogna, Argentine track and road cyclist * Fernando de Araújo (other), multiple people B * Fernando Balzaretti (1946–1998), Mexican actor * Fernando Baudrit Solera, Costa Rican president of the supreme court * Fernando Botero, Colombian artist * Fernando Bujones, ballet dancer C * Fernando Cabrera (basebal ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Jonathan Oppenheim
Jonathan Oppenheim is a professor of physics at University College London. He is an expert in quantum information theory and quantum gravity. Work Oppenheim proved the third law of thermodynamics (first conjectured by Walther Nernst in 1912) with Lluis Masanes. Together with Michał Horodecki and Andreas Winter, he discovered quantum state-merging and used this primitive to show that quantum information could be negative. More recently he and collaborators have developed a resource theory for thermodynamics on the nano and quantum scale. His Ph.D. under Bill Unruh at the University of British Columbia was on Quantum time. In 2004 he was a postdoctoral researcher under Jacob Bekenstein and a Royal Society University Fellow in Cambridge before moving to University College London. Edible ballot society As a student, Oppenheim was involved in the Edible Ballot Society which satirically advanced eating ballots to highlight the democracy gap in electoral politics. He was a ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Andreas Winter
Andreas J. Winter (born 14 June 1971, Mühldorf, Germany) is a German mathematician and mathematical physicist at the Universitat Autònoma de Barcelona (UAB) in Spain. He received his Ph.D. in 1999 under Rudolf Ahlswede and Friedrich Götze at the Universität Bielefeld in Germany before moving to the University of Bristol and then to the Centre for Quantum Technologies (CQT) at the National University of Singapore. In 2013 he was appointed ICREA Research Professor at UAB. Winter's research is focused in the field of quantum information theory. Some of his main contributions concern the understanding of quantum communication protocols, the coding theory for quantum channels, and the theory of quantum entanglement. Together with Michał Horodecki and Jonathan Oppenheim, he discovered quantum state-merging and used this primitive to show that quantum information could be negative. Together with Marcin Pawlowski, Tomasz Paterek, Dagomir Kaszlikowski, and Valerio Scarani, he disc ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
State-merging
In quantum information theory, quantum state merging is the transfer of a quantum state when the receiver already has part of the state. The process optimally transfers partial information using entanglement and classical communication. It allows for sending information using an amount of entanglement given by the conditional quantum entropy, H(A, B)\,=\,H(AB)-H(B) \, . with H(A) the Von Neumann entropy, H(A):=-Tr\rho_A\log\rho_A. It thus provides an operational meaning to this quantity. Unlike its classical counterpart, the quantum conditional entropy can be negative. In this case, the sender can transfer the state to the receiver using no entanglement, and as an added bonus, this amount of entanglement can be gained, rather than used. Thus quantum information can be negative. The amount of classical information needed is the mutual information I(A:R):=H(A)+H(R)-H(AR). The case where the classical communication is replaced by quantum communication was considered in. This is k ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
1973 Births
Events January * January 1 - The United Kingdom, the Republic of Ireland and Denmark 1973 enlargement of the European Communities, enter the European Economic Community, which later becomes the European Union. * January 15 – Vietnam War: Citing progress in peace negotiations, U.S. President Richard Nixon announces the suspension of offensive action in North Vietnam. * January 17 – Ferdinand Marcos becomes President for Life of the Philippines. * January 20 – Richard Nixon is Second inauguration of Richard Nixon, sworn in for a second term as President of the United States. Nixon is the only person to have been sworn in twice as President (First inauguration of Richard Nixon, 1969, Second inauguration of Richard Nixon, 1973) and Vice President of the United States (First inauguration of Dwight D. Eisenhower, 1953, Second inauguration of Dwight D. Eisenhower, 1957). * January 22 ** George Foreman defeats Joe Frazier to win the heavyweight world boxing championship. ** A ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Living People
Related categories * :Year of birth missing (living people) / :Year of birth unknown * :Date of birth missing (living people) / :Date of birth unknown * :Place of birth missing (living people) / :Place of birth unknown * :Year of death missing / :Year of death unknown * :Date of death missing / :Date of death unknown * :Place of death missing / :Place of death unknown * :Missing middle or first names See also * :Dead people * :Template:L, which generates this category or death years, and birth year and sort keys. : {{DEFAULTSORT:Living people 21st-century people People by status ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
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